Sock



FIG. 1 is a perspective view of a sock;

FIG. 2 is a front view of a sock;

FIG. 3 is a rear view of a sock;

FIG. 4 is a right side view of a sock;

FIG. 5 is a left side view of a sock;

FIG. 6 is a top view of a sock; and,

FIG. 7 is a bottom view of a sock.

The broken lines in the drawings are for the purpose of illustratingportions of the sock and form no part of the claimed design.

CLAIM The ornamental design for a sock, as shown and described.